Weighing-machine



(No Model.) 6 Sheets-#Sheet 1.

F. H. RICHARDS. WBIGHING MACHINE.

188572888. Patented No'v. 24, 1898.

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(No Model.) 6 Sheets-Sheet 2.

P. H. RICHARDS.

WEIGHING MACHINE.

No. 572,088.. Patented Nov. 24, 1896.

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WBIGHING MACHINE.

No. 572,088. Patented Nov. 24, 1896.

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P. H. RICHARDS.

WEIGHING MAGHINE.

10.572,088. i Patented Nov. 24, 1896.

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6 Sheets-Sheet 5.

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11H. RICHARDS. WBIGHING MAUHINE.

Patented Nov. 24, 1896.

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(No Model.) 6 sheets-sheen e.

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v WBIGHING MACHINE.

No. 572,088. Patented Nov, 24, 1896.

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UNITED STATES PATENT OFFICE.

FRANCIS H. RICHARDS, OF HARTFORD, CONNECTICUT.

WElGHlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 572,088, dated November24, 1896.

I Application filed May 7, 1896. Serial Nox 590,584. (No model.)

To all whom, it may concern,.-

Beit known that I, FRANCIS I-I. RICHARDS, a citizen of the UnitedStates, residing at Hartford, in the county of Hartford and State ofConnecticut, have invented certain new and useful Improvements inIeighing-lllachines, of which the following is a specification.

This invention relates to weighing apparatus, and more especially tostream feed or supply mechanism therefor, an object being to provideimproved means of this character embodying a variable-speed feeder orfeed device and efficient means for changing its speed from one velocityto another and for also stopping its movement at predetermined points inthe operation of the apparatus, so that the stream of Inaterial suppliedthereby may be varied in volume in correspondence with the variation inspeed of the feeder and may be also stopped therewith.

Another object is to provide improved means for operating the drivingmechanism of the feeder and for controlling the same from a suitablereciprocatory member of the Weighing mechanism.

In the drawings accompanying and forming part of this specification,Figure l is a front elevation of a weighing apparatus comprehending mypresent improvements in the preferred embodiment thereof andillustrating the positions occupied by the various operative mechanismsand devices at the commencement of operation, the feeding mechanismbeing driven at its high velocity. Fig. 2 is a plan view of the upperpart of the ap paratus, a portion of the feeder-mechanismdriving meansbeing shown in central horizontal section. Fig. 2:L is a detail insectional elevation of part of the feeder vibrating means. Figs. 3, a,and 5 are end elevations as seen from the left in Fig. I, showing thepositions assumed by the operative parts of the apparatus when thefeeding mechanism is driven at its high and low speeds, respectively,and when at rest, the bucket or loadcarrying receptacle being showndischarging its contents in said last-mentioned view or when the feederis at rest. Fig. (3 is an end elevation as seen from the opposite sideof the apparatus or from the right in Fig. l, the operative parts beingin positions corresponding, respectively, with Figs. l and 3. Fig. 7

is a central vertical section of a modified form ofsupply-disintegrating device, and Fig. S is a front elevation of thesame.

Similar characters designate like parts in all the figures of thedrawings.

My present invention comprises as one of its constituent elements aweighing mechanism which may be of any suitable or preferred kind; butfor convenience in illustrating the nature and peculiar purposes of saidinvention I have shown and will hereinafter describe weighing mechanismof the type disclosed in Letters Patent No. 548,8i0, granted to me onOctober 2f), i895, to which reference may be had.

The framework for supporting the operative parts of the weighingmechanism may be of any suitable character and is herein illustratedcomprising the two side frames or members 2 and a, respectively, whichare mounted upon the chambered supportingbase 3, into which latter thebucket-loads of material from the weighing Inechanism are intermittentlydischarged.

Two beams 5 and G are shown connected, respectively, with the sideframes 2 and 4, said beams being joined by the preferably integraltie-plate 7, the structure constituting a convenient framing forsupporting certain of the working parts of the feeding mechanism. As ameans for increasing the stability of this top framing, the two supportsor standards S and 9, extending upwardly from opposite ends of the base3 and connected to the two beams 5 and 6, are shown.

The beam mechanism is herein illustrated comprising the oppositelydisposed scalebeams B and B',.respectively, preferably and suitablymounted upon the chambered supporting-base 3 and comprising suitablemeans for supporting the bucket, which latter is designated in a generalway by G.

The closer for the bucket is designated in a general way by L and isshown comprising the two connected plates or sections 75 and 75', theconnection between these Inembers being illustrated as a pivotal one,and the 'plate 75 being also illustrated as pivotally connected near thelower rearward side of the bucket G and adjacent to one side of thedischarge outlet or orifice, which, it will be observed, is ofconsiderable size or area, so that IOO the bucket contents may bedischarged with great rapidity.

As a means for sustaining the bucket-closer L, the following-describedmechanism may be employed: The bucket G is illustrated pivotallycarrying near the upper rearward side thereof the rocker550, whichconstitutes one member of a closer-supporting toggle. rl`he other memberof said toggle is shown as the connecting-rod 596, which is pivotallyconnected to the rocker and to the closer L (see Fig. 6) in such amanner that when the closer is in its normal or shut position the twopivots of said connecting-rod or toggle member 596 will be substantiallyin alinement with and the upper of said pivots will be above therocker-pivot, so that the rocker, and hence the connected closer, may beheld against movement by a latch or like device with a minimum pressurethereon, as practically the entire weight of the bucket contents will besupported from the rocker-pivot. For thus holding the rocker 550 againstoscillatory movement on the bucket G when the closer is in its normalposition the latch S2 is herein illustrated and is shown pivotallysupported upon the bucket G, being preferably provided with a detent forengaging a cooperating detent on one end of the rocker-arm 550. In theembodiment illustrated the closer-latch 82 swings upward for engagingtherocker 550, it being suitably eounterweighted, as at S3, for effecting'this movement. For releasing the closer L it will be apparent that thelatch S2 is depressible, and when its detent is disengaged from thecooperating detent of the rocker 550 the closer is freed of allrestraint and may be forced open by the weight of the bucket contents tothereby cause discharge thereof.

As a means for returning the closer to its normal position when thebucket-discharged mass has passed below the discharge edge or lip of thesaid closer, the end walls of the bucket G are shownpivotallysupportingthe two counterweighted levers 7G and 7G',respectively, which are connected by means of the links 77 and 77l withthe bucket-closer L and to the section thereof. The operation of theseconnected parts will be readily obvious from an inspection of thedrawings. When the closer L is locked in its closed position, the saidcounterweighted plates will be 'in the position illustrated in Figs. 3and 6.

\Vhen the closerLis in its normal position, as indicated in Fig. 3, itwill be noticed that the two plates 75 and 75" are disposed in ditferentplanes, and on the opening movement the two sections will be shiftedinto alinement, so as to practically form a unitary structure, and asuitable stop or stops will be preferably employed for preventing amovement beyond such position of one of said plates.

The plate 7 5' is illustrated equipped with a stop or stops 75", whichimpinge against the under surface of the plate 75 when the closer L hasreached the limit of its opening movement.

The invention contemplates the provision of feeding mechanism forsupplying or foreing a stream of material into the bucket or loadcarrying receptacle of the weighing mechanism, which action is necessaryin the case of materials possessing certain characteristics-such asiiour, cotton-seed meal, &c.- which cannot be successfully supplied tothe bucket by gravity,as when the stream-controlling valve or valvesemployed in the ordinary classes of machines have reached apredetermined point in their closing movements such substances cannotiiow over the valve, such valves being disposed at such an inclinationas will prevent such action.

The feeding mechanism herein illustrated comprises a feeder or feedingdevice which is designated in a general wayby F andis shown consistingof an endless band or apron 30 of suitable material-sueh as can vas orleatherwhich is shown supported by the two rolls 3l and 32, thefirst-mentioned of which is preferably operatively connected withsuitable driving or actuating mechanism for effecting a movement of thefeeder, the direction of which is indicated by the arrow in Fig. Theopposite ends of the shaft 3l ofthe roll 31 are shown journaled insuitable bearings formed in the top frame or beams 5 and (j of theapparatus, said shaft being extended beyond said beams for a purpose tobe hereinafter described. rlhe opposite ends of the shaft 32 are shownjournaled in suitable bearings formed in the opposite members of theyoke 33.

The yoke 33 is illustrated pivotally supported for rocking or vibratorymovement, the peculiar purpose of which will hereinafter appear, and ashaving the rearward-projecting spindle or pivot 3ijournaled in asuitable bearing formed approximately midway of the plate 7.

Means are also shown for preventing the displacement of the feeder-roll32, which consists, in the present instance, of the nut 34, threaded onthe spindle 3et,by removing which said roll 32 may be readily removed.

A supply chute or hopper is shown at ll and is of ordinary construction,being suitably secured to the two beams 5 and (3, and being also locatedover the feeder-belt 30. In

practice the hopper ll may be supplied with material by suitable meanswhich directs the same to the belt 30, so that thel latter on its IOOIIO

movement may feed a stream to the bucket G, the receiving-orifice orsupply-opening of which is located below the front end of the feeder andin alinement with the descending stream of material therefrom.

The feeder F will also have a variable or differential speed, whereby asthe velocity thereof is varied the volume of the fed or forced streamwill be correspondingly varied, and when said feeder is stopped theresult naturally will be a stoppage of the fed or forced stream ofmaterial.

At the commencement of operation of the apparatus the feeder F will haveits maximum or high velocity, so that it is effective for feeding astream of relatively large volume, or what constitutes the main stream,into the bucket Gr. At the commencement of the poising period the speedof the feeder will be reduced, so that it may feed into the bucket astream of relatively small volume, or what is usually termed the-drip-stream. `On the completion of the bucket-load by the drip-streamthe feeder movement will be instantly stopped, succeeding which thecompleted bucket-load will be discharged.

For controlling or regulating the movement of the feeder meansoperatively connected with some reciprocatory member of the weighingmechanism will be employed, said member being preferably operativelyconnected with the feeder, driving` or actuating mechanism, whereby areduction in speed and stoppage of the feeder may be automaticallyobtained at predetermined and proper points in the operation of theapparatus.

As a means for obtaining a differential speed of the feeder F, thedriving mechanism herein illustrated will be preferably employed, andcomprehends differential pulleys operatively connected by belting oranalogous means with a second series of pulleys, which latter in turnmay be connected by suitable gearing or otherwise to the feeder F.

A power or pulley-supportin g shaft is shown at 35, and one of its endswill be preferably journaled in a bearing formed in the beam (l, theopposite end of said shaft bein g supported by a housing orjournal-boxing 7L, which comprises two separable members 35 and 35", thelast mentioned of which is illustrated as formed integral with the beam(3. The two members of the shaft-housing 7L will be suitably connectedtogether in such a manner as to readily permit of their separation,whereby the shaft- 35 may be dismounted for any purpose.

The shaft 35 is illustrated carrying adjacent to the rear end thereofthe bevel-gear 3G, which maybe keyed or otherwise secured to said shaftfor rotation therewith and which is shown meshing with a bevel-gear 3(3,suitably iiXed upon the extended end of the rollshaft 3l, said gearsbeing iucased in the housing It, which constitutes a convenient meansfor preventing access of dust and other foreign matter to the teeth ofsaid gears. On

the rotation of the shaft 35 it will be evident that motion will betransmitted to the primary roll 3l of the feeder through the interposedbevel-gears 3G and 36, so that the feeder-belt 30 may be driven and astream of material forced or fed from the chute or hopper into thebucket Gr. The shaft 35 is illustrated carrying a series of pulleyswhich are fast and loose thereon and which are also connected by beltingor equivalent means with the hereinbefore-mentioned differentialpulleys, said fast pulleys being splined or otherwise secured to thesupporting-shaft 35 for rotative movement therewith.

In Figs. 3, 4, and 5 there is illustrated by dotted lines a line-shaft37, which is shown suitably carrying the pulley 37', which isoperatively connected by a belt with a suitable motor, (not showm) orsaid shaft may be rotated by gearing. The shaft 37 is also illustratedsupporting the differential pulleys 3S and 38, to which allusion hashereinbefore been made, the first-mentioned of which is of relativelylarger diameter than the other, so that when effective it may drive theconnected feeder F at a relatively high velocity, and when the pulley38is operative for actuating the said feeder the speed thereof, as willbe readily obvious, is materially reduced.

The shaft 35 is illustrated carrying a series of fast and loose pulleys,the fast pulleys being designated by f and f and the loose pulleys by Z,l, and l, respectively, and which series is shown connected with thedifferential pulleys 38 and 38 by the two belts 39 and 39, which arelaterally shiftable along said series of pulleys. The belt 39 is shownconnected to the large pulley 3S, the belt 39' beingconnected with thesmall pulley 3S.

For moving the belts 39 and 39', respectively, a suitable shiftingdevice, preferably operatively connected with some movablysupportedmember of the weighing mechanism, will be preferably employed, and forshipping said belts the T-shaped rod et() is herein illustrated and isalsoshown pivotally supported at 40' by the framing cf t-he apparatus.

The transverse portion or head 40 of the belt-shipping rod l0 is shownequipped with the usual belt-engaging lingers or members by which thetwo belts may be simultaneously moved along the series of fast and loosepulleys, so that at proper points in the operation of the machine thespeed of the feeder may be automatically controlled and regulated by andfrom the weighing mechanism.

The peculiar operation of the feeder speedchanging and stopping meanswill be readily apparent from an inspection of the drawings. Fig. 3illustrates the positions assumed by the operative parts of theapparatus at the commencement of a cycle of movements thereof, thefeeder F being driven at its high speed, so that it is effective forfeeding a stream of relatively large volume from the chute or hopper lilinto the bucket G. At this point IOO IIO

the belt 39 will be on the pulley 38 and the fast pulleyf, and the belt39 will be on the small pulley 3S and the loose pulley Z, so that theshaft 37, through the two connected pulleys 38 and f, shaft 35, andbevel-gears 3G and Se, is operative for driving the feeder F. As thebelt-shipper #i0 is oscillated to what is herein illustrated as theleft,7 the two belts 30 and $9/ will be simultan eously slipped from thepulleys f and l to the pulleys I and f', respectively, so that the smallpulley 3S is immediately effective for driving the connected feeder F ata decreased velocity. (See Fig. et.) rlhough the pulley 3S continues torotate, itis ineffective for operating the feeder F, as its belt 30 ison the loose or idle pulley l, which latter rotates ineffectively aboutthe shaft S5.

The periphery of the pulley Z is shown as being relatively wide, thepurpose of which will be now made apparent. As just stated, the feeder Fis being driven at its low speed, which movement continues for a limitedperiod of time, so that said feeder is operable during such reducedspeed for supplying a stream of small volume into the bucket to completethe partial load therein. 0n the complet-ion of the bucket-load thebelt-shipping rod l0 is further oseillated to the left through itsconnection with the weighing mechanism, and the belt 3f) is slippedthereby farther along the loose pulley Z, and simultaneously therewiththe belt Si) will be shifted to the loose or idle pulley Z, se that thefeeder F may be instantly stopped, and through the shaft 37, pulleys 3Sand 38, and the belt-connected pulleys Z and l continue their movements.The two said last-mentioned pulleys do not constitute a-source of powerfor conveying motion to the feeder F, as they simply rotate about thesupporting-shaft 35.

My present invention contemplates the employment of means for vibratingor jarring the feeder F during a portion of its operation and preferablyduring the poising or dripstream period, so that when said feeder isrunning at a slow velocity and when thus vibrated the mass or supply ofmaterial sustained thereon will be thinned out and evenly distributedthroughout the area of the feederbelt 30.

As a means for in'iparting vibratory or rocking motion to the `feederl", the devices shown may be employed, which consist of a multifaced camfor imparting a movement in one direction to said feeder and a spring orspringactuating device for effecting the opposite movement thereof.

The yoke 33, which has been described as constituting a means forsupporting in part the feeder or conveyer belt 50, is also vibratory,and it will be evident that on the vibration thereof such motion will betransmitted to the feeder F for effecting the peculiar resultshereinbefore mentioned.

The yoke 33 is shown having formed at one side of the axis of movementor pivot 34s the laterally-extending arm il, provided at the outer endthereof with an antifrictien-roll411.', which serves its well-knownoilice and which is interposable into the path of movement of themultifaced cam l2, suitably secured to the shaft 35 for rotationtherewith. The yoke 33 is also shown having a second laterallyextendingarm ail, formed on the opposite side of its axis of movement, to whichand to the under side of the top beam 5 a coiled spring List is shownattached. rlhe spring il forces the antifriction-roll 4l. against thefaces of the cam-wheel l2, so that as the latter rotates the facesthereof may successively rock the yoke in one direction, the coiledspring -l-t oppositely rocking the said yoke, the vibrations of thelatter being imparted to the conveyer-belt 3l).

During the major period of the operation of the apparatus, or while thestream of large volume is fed into the bucket, ihe feeder-vibratingmeans will be held inactive and preferably by means governed from theweighing mechanism, whereby an automatic operation may be obtained.

The top beam of the framing is illustrated pivotally carrying the linkl5, which is also operatively connected. with some member of theweighing mechanism. Said link is shown having the inward projection if.(llerein illustrated as an antifriction-roll.) As the link -i swings inone direction the projection l5' thereon moves under the lateral arm 43,raising said arm and the right-hand side of the yoke depressing theopposite side of said yoke and also the roll il, so that this will becarried past the plane of movement of the multifaced cam 42, the latterthereby being rendered ineffective as a stroke-transmitting factor andthe feeder F held non-vibratory. (See Figs. 3 and (i.)

At a predetermined point in the operation of the apparatus or at thecommencement of flow of the drip-stream the projection i5 is swung fromunder the arm i3 and to what is ,illustrated as the cright in Fig. G, sothat the coiled spring il and multifaced cam i2 become immediatelyoperative for transversely vibrating or reciprocating the feeder F. On.the stoppage of the shaft 35 by the shipping of the belts 250 and lillin the manner previously described the vibratm'y movement of thc feederF will be concurrently stopped, as will be clearly obvious.

The invention also comprehends a disintegrating device disposed in theline of llowof the supply-stream and preferably supported for yieldingmovement and in. a direction coinciding with the direction of llow ofsaid stream. The disintegrating device (illustrated in its preferredforni in Fig. l) consists of a shaft l?, the opposite ends of which arejournaled in a suitable bearing formed in the top fralne of theapparatus, and a series of radial bars or fingers extending therefromand properly spaced, said bars being designated by 47' and beingpreferably integral TOO IlO

with the shaft i7. The shaft i7 will be also preferably counterweighted,a weight t8, formed at one end of the arm 48, being provided for thispurpose, so that the fingers or bars 47 will be held in contact with thefed stream of material on the conveyer or feeder belt 30. Should therebe any lumps in the mass on said belt these will be effectively brokenas they strike the bars or fingers, and for securing a greater range ofaction of the disintegrating device the shaft 47 will be positioned forreceiving` a reeiprocatory movement from a suitable device.

rllhe shaft 47 is illustrated carrying a peripherallygrooved clutchmember t9, between the walls of which a suitable pin 0r like deviceformed on or carried by the rockarm 50 is operative, the opposite end ofsaid rock-arm being suitably fixed to the relatively short rock-shaft51, which also iixedly carries the bifurcated or forked transmissiondevice 52, between the branches of which the cam or eccentric 58, formedon or secured to the shaft 35, is rotative, so that on the rotation ofsaid shaft a reciproeatory movement will be conveyed to the rock-arm 50by the interposed cam 5S and transmission device 52 for reciprocatingsaid rock-arm and also the connected shaft 47.

It frequently happens that particles of material cling or stick to thefeeder or eonveyerbelt 30 when this is on its lower run, and becomingdislodged therefrom are, of course, wasted. For catching such separatedparticles to prevent the waste thereof a shaking or reciprocatory apronis shown located below the feed-belt 30 and is preferably disposed atsuch an inclination as to freely permit the dislodgment of any of thematerial thereon on its reciprocation. Said shakingapron is designatedby 53 and preferably has upturned ends or flanges to prevent lateralscattering 0f any material that may drop thereon from the feeder. Theapron 53 is shown supported adjacent to its front end bythe two links 53and 53, which are shown pivotally connected thereto at opposite ends andalso to the top framing or beams 5 and G.

The two standards 8 and 9 are illustrated supporting the rock-shaft 54,to one end of which is fixed the rock-arm 55, the opposite end of thelatter being shown pivotally connected with the shaking-apron 53. Theopposite end of the shaft 5-.L is shown equipped with an angle-lever 5G,one member or arm of which is pivotally connected with the apron 53, andthe other armof which is shown similarly connected to the pitman 57,which latter has a ring 57 at its upper end, which embraces the cam oreccentric 58, suitably formed on or carried by the extended end of therollsupporting shaft 3l', so that on the movement or rotation of saidshaft a reci procatory movement will be imparted to theoperatively-connected apron in an obvious manner, and ou the stoppage ofsaid shaft the shakingapron will be simultaneously stopped.

On the completion of the bucket-load the feeder F is instantly stopped,and when such action takes place the material lying thereon near thefront thereof is usually projected toward the bucket. While thisdislodged mass is quite small it is desirable that it should not enterthe loaded bucket, the result being, as will be understood, an error inweighing. For catching such dislodged particles of material a valve isherein illustrated, which during the normal or major part of theoperation of the machine is not in contact with said stream, so that itmay iiow without obstruction into the bucket.

The valve 70 is of the pan or scoop type, and for supporting the samethe following means may be employed: The beams 5 and (i of the apparatusare illustrated having formed thereon the arms or brackets 5 and 6betweenand to which the rock-shaft 59 is shown pivotally supported. Therockshaft 59 is also shown having adjacent to its opposite ends therock-arms 59' and 59, between which the valve 70 is hung, the supportfor said valve being suitable pivotscrews carried by said rock-arm andjournaled in the opposite end walls of said valve.

'lhe drizzle catching or closing movement of the valve may be effectedby the following mechanism: The side frame et is illustrated pivotallycarrying a lever 504, the rear or long arm of which is shown providedwith a counterweight 507, preferably adjustable along said arm, and saidcounter-weighted arm normally exerts a valve-closing tendency or movesdownward. This action, however, will preferably be prevented during themajor period of the operation of the apparatus, so that the valve 70will be held away from the line of iow of the stream fed into the bucketG by the belt 30.

The hub 50i" of the lever 5M (see Fig. l) is illustrated carrying therigidly-connected rock-arm G0, the opposite or upper end of which isshown pivotally connected with the hub or extension GO', projecting fromthe valve 70 at a point to its rear and above the axis of movement ofsaid valve in its hereinbefore-described supporting frame or yoke.

It is to be understood that when the descending movement of the lever50a is herein mentioned such statement refers to the movement of thelong or counterweighted arm of said lever.

It will be remembered that a belt-shipper l0 has been hereinbeforedescribed and as also connected with a reciprocally-supported member ofthe weighing mechanism for effecting a shifting of the belts 39 and 39',whereby the speed of the feeder and its stoppage may be automaticallycont-rolled, and such reciprocatory member is herein illustrated as thelever 50i. Said lever is shown having formed at a point adjacent to itscenter of movement the upwardijf-extending lug or ear Gl', to which isillustrated as pivotally connected the link (il, the opposite end ofIOC) which latter is shown as similarly connected with the belt-shippingrod 40 at a point preferably intermediate its ends.

The lever 50i on its descending movement or stroke will have twosuccessive periods of operation, at the commencement of thefirstmentioned of which, or when the 'feeder F is driven at its lowspeed, it maybe interseeted -by suitable automatically-operating means,

whereby the duration of feed of the drip stream may be controlled. Theoperation of the lever 50i will be clearly understood from a referenceto Figs. 3, 4, and 5 of the drawings, which illustrate the successivepositions occupied thereby during its cycle of movement. Fig.illustrates the lever 504 in its uppermost position, the belt being onthe large pulley 238 and the fast pulley f, the companion belt 30 beingon the loose pulley Z, the pulley 38 being operable for driving theconnected feeder F at its high speed.

As the lever 504 descends from its uppermostposition, the belt-shippingdevice i0 will be oscillated to what is herein illustrated as the leftand in. unison therewith through the intervention of the link Gl, whichis connected, respective] y, with said belt-shipping device 40 and lever504. lVhile this action is taking place the two belts 30 and 30 will beslowly moved to the left and slipped along their supporting-pulleys, sothat at a predetermined point in the operation of the machine, or whenthe bucket has nearly completed its load, the belt 9.() will have beenshifted to the loose pulley Z and the belt 35) to the fast pulley f', asindicated in Fig. 4, whereby the small pulley 3S is effective fordriving the connected feeder F through the medium of the fast pulley f',which is connected with said feeder. At this point in the operation ofthe apparatus the lever 5% will be held against further descendingmovement to permit the ow of a drip-stream into the nearlyloaded bucket,and when released will have a further descending movement, during whichthe two belts 39 and 35)/ will be further shifted by the device 40, thebelt 39 being slid further along the relatively wide loose pulley Z andthe belt 39' to the loose pulley Z, so that the movement of the feeder Fwill be instantly stopped, the pulleys Z and Z", rotating idly abouttheir supporting-shafts 35, being then ineffective aspo\vei.transmitting factors. On the ascending movement of the lever Jrrthe operation just described will be reversed.

During the descending movement of the valve-actuating lever 50i it isoperable for closing the valve, which latter, during the ow of the mainor relatively large stream, is located relatively remote from saidstream as it leaves the feeder F and descends toward the bucket G.

As the lever 501L descends, a force will be exerted thereby through therock-arm 00 to the rock-arm 50", its shaft 50, and the coinplementaryrock-arm 50/ through the interposed valve 70, the force being directedagainst the point of pivotal connection of the rock-arms 50 and 50 withthe valve, so that said rock-arm will be moved to what is hereinillustrated as the left, this action continuingduring the flow of themain stream, or up to the point indicated in Fig. 4f. At this point inthe operation of the apparatus the lever 504 is held against furtherdescendingmovement, and during the first-mentioned movement of saidlever the oscillation of the valve 70 about its own axis is quiteslight. On the release of the lever 504C it descends farther and isoperable for further oscillating the rock-shaft 59 and the two rock-arms50 and 50 and also imparting to the valve 7 0 a relatively considerableupward oscillation, so that it may catch the drizzle or spray whichdrops from the feeder F on its stoppage, this action taking place on thelast-mentioned movement of the lever 501i-, or when it drops from theposition indicated in Fig. l to that illustrated in Fig. 5. On theascending movement of the lever the described operation will bereversed.

It is desirable to check or retard the descendin g movement of the lever504, whereby the closing movement of the valve 70 and the shipment ofthe belts 30 and 30' may be .regulated with precision. For effectingthis aetion the oscillatory cam 500 is illustrated having two cam-faces501 and 502, the last-mentioned of which is of relatively less retarding efficiency than the former.

The short arm of the lever 504e is illustrated equipped with anantifriction-roll 500, which is adapted to successively contact with thetwo connected cam-faces 501 and 502, so that as said roll is on thecam-face 501 a slow downward movement of the lever 50-1- will be theresult, and when the roll 50G leaves said cam-face and engages thecam-face 502 an accelerated or multiplied downward movement of saidlever will follow, and said lever during said last-mention ed movementis operable for stopping the feeder F and for imparting the finalclosing movement to the valve 70, with which it is respectivelyconnected.

As a means for supporting the cam 500 a transverse rock-shaft 03 isillustrated pivotally supported to and between the brackets or arms 5and 0", projecting forward from. the top beams 5 and (3, respectively,of the framing, said cam being preferably formed integral with the hub03.

rlhe opposite hub 023 of the rock-shaft 013 is illustrated having formedthereon a lug or ear to which is pivotally attached the connecting-rodS, constituting a thrust-rod, which also has ascending and descendingmovements, for a purpose to be hereinafter described, the guide or link55S', attached to said rod and also to a relatively iixed part of theframing, constituting a convenient means for maintaining said rod in itsoperative position. Said rod 55S serves a dual functionas a means fortransmitting a thrust to the valve suiiieient for opening the same andalso as a means, in connection with some IOL TIO

suitable member, for limiting the oscillatory movement of the cam 500,these two members, as has been described, being` connected to therock-shaft 03.

It will be remembered that the normal tendency of the lever 504 is todescend to accomplish the peculiar results hereinbefore specified andthat the cam 500 constitutes a convenient stop device for checkin g suchmovement.

The scale-beam B is illustrated shiftably supporting the counterweightedlever 551, pivoted thereto adjacent to its inner end, the weight ofwhich is normally exerted on the counterpoised side of said scale-beam,but which, when shifted at a predetermined point in the operation of theapparatus, will be subtracted from said counterweighted side of thescale-beam B. The normal position of the counterweighted lever 551 isillust-rated in Fig. 0, said lever being maintained in such position bysuitable stops, so that it constitutes during the greater part of theoperation of the apparatus an extension of the beam B.

As the bucket and beam mechanism de scend, due to the flow of the streaminto said bucket, the lever 551 will move with the beam B, and, fallingfrom under the connecting-rod 55S, the shaft 03, and hence the connectedcam 500, may be rocked, the movement of the cam being, as hereinbeforespecified, to the left, the antifriction-roll 500 riding along thecam-face 501, thereby permitting a slow descending movement of the lever504. Vhen the roll has reached the intersection of the connectedcam-faces 501 and 502, its further movement will be suitablyintercepted, and when said lever is released the roll 506, leaving thecam-face 501, will engage the cam-face 502. The result will be anaccelerated downward movement of the lever 504.

It will be assumed that the lever 551 has been shifted about its pivoton the beam B and is free to return to its normal position, (illustratedin Fig. 0,) the cam 500 and lever 504 being in the positions illustratedin Fig. 5. As the lever 551 resumes its normal position an upward thrustwill be imparted to the connecting-rod 55S and an oscillatory movementtransmitted to the connected cam, and its movement to what is hereinillustrated as the right in said Fig. 5 will be effected, so that saidcam, as its faces 502 and 501 respectively engage the roll 500, isoperable for returning the lever 504 to its uppermost position, as willbe clearly obvious.

As a means for intercepting the downward movement of the lever 504 atapredetermined point in the operation of the apparatus or when the twobelts 30 and 30 have been shipped from the pulleys f and Z to thepulleys Z and f to effect the low speed of the feeder F, the followinginstrumentalities may be employed: The hub 08 of the rock-shaft 63 isillustrated carrying the depending` rod 509, the path of movement ofwhich is intersected by a suitable stop. The stop-rod 500 beingoscillatory with the shaft 03,which shaft also rigidly carries the cam500, it will be apparent that when said rod is held against movement theoscillatory movement of the cam 500 by the lever 504 will be likewiseprevented. The stop for thus engaging the rod 500 is illustrated as acounterweighted lever pivotally supported upon the scale-beam B (secFigs. 3, 4,` and 5) and which is adapted for engaging the rod 509 at apredetermined point in its oscillatory movement, whereby the connectedcam 500 and lever 504 may be also held against movement, as shown inFig. 4. At this time the drip-stream will flow into the bucket tocomplete the load therein, and when the load is completed and the bucketand beam mechanism are caused thereby to descend below the poising-linethe by-pass 57 0 will release the rod 509 and the devices controlledthereby. Suitable means will also be employed for maintaining theby-pass 570 against reverse movement when in engagement with the rod500. Onthe return movement of said rod 509 it simply engages and swingsthe by-pass 57 0 ineffectively about its pivot.

The apparatus involves the provision of reciprocally-ei'f'ective stopdevices operative, respectively, with the valve, and hence with thefeeder and with the bucket-closer, so that the valve will be maintainedpositively in a closed position and the feeder at rest while the closeris open, and the closer will be likewise held against opening movementwhile the valve is open and the feeder in motion, should the latch S2 beprematurely tipped.

The closer-operative stop is herein illustrated as the rocker 550, thecoacting stop, or that operative with the valve 70 and feederF,beingdesignatedby412. Therockingstop 550 is also illustrated havingtwo supplemental stops or stop-faces 413 and 413, the iirst mentioned ofwhich is deiined by an arc struck from the axis of movement of the saidstop 550. The stop 412 is illustrated rigidly connected with therock-shaft 03,being preferably formed integral with the shaft-hub 03",and it will be evident that any limitation in movement of the stop 412will similarly affect the rock-shaft 03, and hence the cam 500, andnecessarily the feeder F, through the lever 504, which controls theaction of said feeder. The stop 412 is shown having two supplementalstops or stop-faces 412 and 412, the first mentioned of which is acurved stop-face concentric with the axis of movement of said stop, andthe other of which is a suitably-su pported antifriction-roll.

The operation of the stop system will be understood from an examinationof the drawings. So long as the stops 413' and 412 are in contact, asindicated in Fig. 0, the oscillation of the stop 550 will be prevented,the opening movement of the closer being likewise prevented, the stop412 serving, while this contact continues, practically as a fixed IOOIIO

abutment. As the cam 500 moves to what is indicated as the left in Fig.3 and the speed of the feeder is varied in the manner previouslydescribed the stop li12 will move in unison and in a directioncoincident therewith, or to what is illustrated as the right in Fig. (3.

`When the stop or roll 412" has crossed the plane of curvature of thestop-face 413, which action takes place during the linal descendmgmovement of the lever i, or when it drops from the position shown inFig. `1 to that illustrated in Fig. 5, the stop 550 is free to oscillateto permit the discharge of the bucket-load, it being understood thatwhen the rocker or stop 550 is released from all restraint the connectedbucket-closer L may be forced open by the weight of the bucket contents.As the stop 550 oscillates its stop-face 413 will run in contact, orapproximately in contact, with the stop or roll 112, so that anytendency of the connected stop device i-12 to reversely oscillate willbe effcctually resisted by the stop 550. This being the case, the valveTO will be maintained in its closed position by the cam-face 502, whichengages the roll 500 of the lever 50-1, these last-mentioned parts beingthen in the position indicated in Fig. 5, the two belts which. areoperated by said lever 501 being on the two loose pulleys and l, and thefeeder F being at rest. This peculiar relation will continue so long asthe stops 413 and 412/ are in contact.

lt will be remembered that means have been described for vibrating thefeeder F transversely thereof, this action taking glace during a portionofits movement, or, asherein illustrated, during the drip period, duringwhich time the feeder F is operable for feeding a stream of small volumeinto the bucket G, it being driven at its low speed. For holding thefeeder-vibrating means inoperative during the flow of the main stream, aconnecting-link 45, having a projection fl-5, has been hereinbeforedescribed, said link i5 being also operatively connected with somemovable member of the weighing mechanism, which is herein shown as thestop 112, the link G5, pivotally connected at its opposite ends to saidstop and to the link 15, serving this purpose. On the opening movementot' the valve 70 the stop member 4112 will oseillate to the left, itbeing illustrated in lfig. G as having reached the limit of its forwardmovement; and at a predetermined point in said movement the projection15' will engage under the laterally -projecting arm of theroll-supporting yoke 525, raising the righthand end of said yoke anddepressing the opposite end thereof, whereby the laterally-projectingarm 41 or the friction-roll i1 thereon is carried past by the path ofmovement of the multifaced cam 12, and the latter thereby renderedineffective as a means for vibrating the yoke 33.

On the movement of the stop i12 to the right, as indicated in Fig. (i,the link 4:5 will be moved in correspondence therewith and thereby, sothat the projection 15 will be disengaged from the laterally-extendingarm -ll of the rocking yoke 33, whereby the latter may be oppositelyrocked by the multifaced cam 12 and the spring in the manner previouslydescribed.

It will be remembered that the latch S2 has been described as normallyoperative for maintaining the rocker 550, and hence the connected closeragainst opening movement by engaging a detent formed on the rockerarm550, and that said latch. is depressible for releasing said rocker andcloser.

The latch SO is shown equipped with the laterally-projecting pin S2',which is disposed in the path of movement of the projection SS, suitablyformed on the thrust-rod S, which projection is operable for engagingthe latchpin. S2 and depressing' said lat-eh at a proper point in thedescending movement of said rod 55S.

In Figs. T and S a modification oi' the disintegrating device forbreaking up the lumps in the flowing stream is illustrated, said devicebeing the same in construction and mode of' operation as that.illustrated in Fig. 1, except that the supportilig-shaft 37 isrotatively supported in the brackets G7", and the bars or spokes G8,which radiate therefrom, are disposed spirally on a line running fromend to end of the supporting-shaft (57.

rl`he opera-tion of the hereinbetore decribed apparatus is as follows:Figs. 1 and 23 illustrate the positions occupied by the respectiveoperative parts of the apparatus at the commencement of operationthereof', the feeder F being driven at its high or maximum speed wherebyit is adapted for feeding a stream of relatively large volume into thebucket G. When a certain proportion of the load has been received by thebucket, this and the beam mechanism will descend. As the beam mechanismdescends the counterweighted lever 551 will descend wi th the scalebeaml and fall from under the lever 55S and permit its descending movementand the closure of the valve 7() by the descending lever 501. As thelever 501 descends it moves the belt-shipping device 1Y0 to the left,the latter slipping the belts Si) and 3U from the pulleys j" and to thepulleys l and f, which position is illustrated in Fig. l, the smallpulley l being operative for rotating the shaft 35 at a relatively slowspeed, and hence also correspondingly decreaffiing the speed of thefeeder F through the bevel-gears 3U and 8G', the lastmentioned of whichis connected to the rollshaft ill.. At or about the close of this stageof the operation of the apparatus the stop-rod 5151i will have beencarried against the by-pass stop 570 on the scale-beam, l, whereby the:further progress of said rod and the cam 500, which is rigidlyconnected with supportingdever (523 of the rod 509, is prevented, asshown in Fig. 1, so that while this relation continues the lever 501will be maintained against further TOO l'lO

IIS

descending movement. While the belts 80 and 39' are on the two pulleysZand f', respectively, the feeder F will be driven at a low speed, sothat it is operable for supplying a stream of small volume to the bucketG, the pulley Z rotating idly about its supporting-shaft 35. The drip orreduced stream will then iiow into the bucket to complete the loadtherein, the nearly-loaded bucket in the meantime descending7 the beammechanism of course descending in unison therewith. Vhen the by-pass 570has released the stop-rod 569-due to the descent of the beam B below thepoising-line, indicatingthe completion of the bucket-loadsaid stop-rodis free to further oscillate. Then the stoprod 569 is held againstmovement, the cam 500, and hence the lever 504, engaged thereby and theconnecting-rod 558, are held; the counterweighted lever 551 falling fromunder the connecting-rod 55S. On the release of the stop-rod 569, asjust described, it may oscillate from the position illustrated in Fig. 4to that shown in Fig. 5, the cam 500 being also released and anaccelerated downward movement of the lever 504, caused by the roll 506riding along the cam-face 502. During the iinal descending movement ofthe lever 504 it moves the belt-shipping device 40 to the left, so thatsaid device shifts the belt 39 farther along the loose pulley Z and thebelt 39' to the loose pulley l, whereby these become ineffective asmeans fortransmitting motion to the Connected feeder F. During thislast-mentioned movement of the lever 504: the rod 558 will be thrustdownward with its projection SS into contact with the latch-pin 82,whichaction trips the latch 82 and releases the bucket-closer L, so that theweight of the bucket contents may force the same open.

Having described my invention l claiml. The combination with weighingmechanism embodying a reciprocatory member; of a feeder;suitably-supported fast and loose pulleys, the latter of which isoperatively connected with the feeder; a belt; and means operativelyconnected with said reciprocatory member for shipping said belt from oneof said pulleys to the other.

2. The combination with weighing mechanism embodying a reciprocatorymember; of a feeder; a shaft having differential pulleys; a second shaftoperatively connected with said feeder and supporting a series of fastand loose pulleys; belting connecting said differential pulleys withsaid series of fast and loose pulleys; and a belt-shifting deviceoperatively connected with said reciprocatory member.

3. The combination with Weighing mechanism embodying a counterweightedlever and automatically-operating means for controlling the movements ofsaid lever; of afeeder; suitably-supported fast and loose pulleys; a

belt; and means operatively connected with said lever for shipping saidbelt from one of said pulleys to the other, and vice versa.

4L. The combination with wei ghin g mechananism embodying a valve; of afeeder; a shaft operatively connected to said feeder and supporting fastand loose pulleys a belt; a valveactuating device; and means operativelyconnected with said valve-actuating device for shipping said belt fromone of said rolls to the other, and vice versa.

5. The combination with weighing mechanism embodying a reci procatorymember; of a feeder; a shaft operatively connected to said feeder andsupporting fast and loose pulleys; a belt; a suitably-supportedbelt-shipping device; and a link operatively connecting saidbelt-shipping device and reciprocatory member.

G. The combination wi'tlfweighing 1nechanism, of a power-driven,transversely-vibratory 'feeder controlled by said weighing mechanism.

7. The combination with a power-driven feeder, of means for vibratingthe same dur ing a portion of its movement.

8. rlhe combination with a power-driven feeder having high and lowspeeds, of means for vibrating said feeder d u ring its low speed.

0. The combination with a feeder consisting of a belt, of a pair ofrolls for supporting said belt; and a movably-supported yoke forsupport-ing one of said rolls.

l0. The combination with a feeder consisting of a belt, of two rolls forsupporting said belt; a rocking yoke supporting one of said rolls; andmeans for vibrating said yoke.

ll. rlhe combination with a suitable frame having a bearing, of a yokehaving a journal located in said bearing; a roll; a second roll; a beltconnecting said rolls; and means for vibrating said yoke.

l2. The combination with a suitably-supported yoke, of a pair ofbelt-connected rolls, one of which is supported by said yoke, and theother of which is connected with suitable driving mechanism; and meansfor varying the speed of one of said rolls.

13. The combination with a variable-speed feeder and its drivingmechanism, of means for vibrating said feeder.

li. The combination with weighing mechanism embodying a reciprocatorymember; of a feeder; a shaft operatively connected with said feeder andsupporting fast and loose p ulleys; abelt; and means operativelyconnected with said reciprocatory member for shipping said belt from oneof said pulleys to the other, and vice versa; and means for vibratingsaid feeder.

l5. The combination with a suitably-supported yoke havinglaterally-extending arms; of two rolls connected by a belt, one of whichis supported by said yoke and the other of which is operativelyconnected with driving IOO said said mechanisms; and means for engaginglateral arms to thereby oppositely rock yoke.

lo. The combination with a suitably-supported yoke havinglaterallyextending arms; of two belt-connected rolls, one of which issupported by said yoke; a multifaced cam for engaging one of saidlateral arms; and a spring connected with the other arm and with arelatively-fixed part of the framing.

i7. The combination with weighing mechanism embodying a bucket, of afeeder; a disintegrator; actuating mechanism for said feeder anddisintegrator; and means controlled by the weighing mechanism, forreeiproeating said disintegrator ltransversely of the line of feed of astream of material snpplied by said feeder.

18. The combination with a feeder operable for supplying a stream ofmaterial, and driving mechanism for said feeder; of a shaft having aseries of fingers projecting therefrom and provided with means forholding` said fingers in contact with said stream of material; andweighing mechanism automatically con trolling the action of said feeder.

19. The combination with a pair of rolls, of an endless belt connectingsaid rolls; a shaft having a series of bars projecting therefrom andlocated above the upper run of said feedbelt; means for reciprocatingsaid shaft transx-*ersely of the line of feed of a mass of material onsaid feed-belt; and driving mechanism for one of said rolls.

20. The combination with weighing mechanism embodying a reciprocatorymember; of a feeder; a shaft operatively connected to said feeder andsupporting fast and loose pulleys; a belt; a suitably-supportedbeltshipping device; means operatively connecting said belt-shippingdevice and reciprocatory member; anda suitably-supported shaft having aseries of fingers projecting therefrom.

2l. The combination with a feeder having a variable speed, and operablefor supplying a stream of material; a suitably-supported shaft having` aseries of fingers adapted to contact with said stream of material andautomatically-operative means for regulating the speed of said feeder.

22. The combination with weighing meehanism embodying a bucket, of avariablespeed power-driven feeder controlled by the weighing` mechanism;and a reciprocating apron located below said feeder.

225. lhe coulbination with weighing mechanism embodying a bucket, of avariablespeed power-driven feeder controlled by the weighing mechanism;a supporting-shaft provided with an eccentric; asuitably-supportedreciprocating apron operative beneath said feeder; and a pitmanoperatively connected to said eccentric and reciprocating apron.

2l. The combination with a framework, of

a rock-shaft supported thereby and having rock-arms; a valve supportedbetween said rock-arms; and valve-actuating mechanism.

25. The combination with framework, of a rock-shaft supported therebyand having rock-arms; a valve pivotally supported between saidrock-arms; and valve-actuating mechanism.

2G. The combination with framework, of a rock-shaft supported therebyand having rock-arms; and a lever operatively connected with said valve.

27. The combination with framework, of a rock-shaft supported therebyand having rockarms; a valve pivoted between said rock-arms; apivotally-supported lever having a rock-arm movable about the axis ofsaid lever and connected thereto and also to said valve.

2S. The combination with framework, of a rock-shaft supported therebyand having rock-arms; a valve pivotally supported by said rock-arms; anindependent shaft carrying a cam; and a lever in engagement with saidcam and operatively connected with said valve.

29. The combination with framework, of a rock-shaft supported therebyand having rock-arms; a valve pivotaliy supported by said rock-arms; anindependent shaft carrying a cam; a lever in engagement with said camand operatively connected with said valve; and means for limiting themovement of said last-mentioned rock-shaft.

30. The combination with framework, of a rock-shaft support-cd therebyand having rock-arms, a valve pivotally supported between saidrock-arms; an independent shaft provided with a cam; a lever inengagement with said cam and operatively connected with said valve; arod supported by said last-m entioned shaft; and a stop for engaging thesame at a predetermined point in the operation.

3l. rlhe combination with a feeder and driving mechanism therefor, of avalve; valveactuating mechanism; a bucket having a closer; and means formaintaining the valve closed and the feeder at rest while the closer isopen.

The combination with a feeder and its driving mechanism, of a valve;valve-actuating mechanism; a bucket having a closer; andreciproeally-effective stops operative, respectively, with said valveand closer.

The combination with a feeder having a variable speed and also a periodof rest, of a bucket having a closer; and reciprocallyeffective stopsoperative for maintaining the feeder at rest while the closer is open,and for holding the closer against openingmovement while the feeder isin motion.

34. The combination with framework, of a rock-shaft supported therebyand having rock-arms; a valve supported between said IOO IIO

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rock-arms; a bucket having a closer and reciprocally-effective stopsconnecting, respectively, with said valve and closer.

35. The combination with framework, of a rock-shaft supported therebyand having rock-arms; a valve supported by said rockarms; an independentshaft carrying a cam; a lever in engagement with said cam andoperatively connected with said valve; a stop also carried by saidlast-mentioned shaft; and a coacting stop operatively connected withsaid closer.

3G. The combination with framework, of a rock-shaft supported therebyand having rock-arms; a valve supported by said rockarms; an independentshaft provided with a connecting-rod; a cam carried by said independentshaft; a lever in engagement with said cam and operatively connectedwith said valve; and a device for engaging said rod.

37. The combination with framework, of a rock-shaft having rock-arms andhaving said rock-shaft supported by said framework; a valve supportedbetween said rock-arms; an independent shaft; an independent shafthaving a depending stop-rod; a stop for engaging the same; a cam on saidindependent shaft; a lever in engagement with said cam and operativelyconnected with said valve; a bucket having a closer; a stop supported bysaid independent shaft; a coacting stop operatively connected with saidcloser; a connecting-rod attached to said independent shaft; and adevice for engaging said connecting-rod.

38. The combination with a bucket, of a closer therefor consisting oftwo connected plates, one of whichis attached to the bucket; andcloser-supportin g means connected to the other plate.

39. The combination with a bucket, of a closer therefor consisting oftwo connected plates, one of which is attached to the bucket; andcloser-supporting means connected to the other plate.

40. The combination with bucket mechanism embodying a shiftableload-discharge member, of a variable-speed feeder having also a periodof rest; and means operative with said shiftable load-discharge memberfor holding said feeder against movement during the load-dischargeperiod.

4l. The combination with a bucket, of a two-part closer therefor; acounterweighted lever; and a link connecting said lever and closer.

42. The combination with a bucket, of a closer therefor consisting oftwo pivotallyconnected plates, one of which is provided with a stop forimpinging against the other on the opening movement of said closer; acounterweighted lever; and a link connecting said lever and one of thecloser-plates.

43. The combination with weighing mechanism, of a feeder; a shaftoperatively connected to said feeder and having fast and loose pulleysthereon; a belt; a belt-shipping device; and means operative with saidweighing mechanism for limiting the movement of said belt-shippingdevice.

44. The combination with weighing mechanism embodying a bucket having amember shiftable for discharging a load, of a powerdriven feeder havinga variable speed; a disintegrating device; a valve; valve-actuatingmechanism; and means operative with said weighing mechanism for throwingsaid feeder and disintegratorout of action on the completion of abucket-load.

45. The combination with a feeder comprising aroll; a yoke supportingsaid roll and having a lateral arm; a shaft having a series of fast andloose pulleys; a series of differential pulleys; belting connecting saidseries of pulleys; a belt-shipping device; and a multifaced camsupported by said shaft and 0perable for engaging said lateral arm.

46. The combination with a feeder; of a shaft carrying a series of fastand loose pulleys a belt-shipping device; a suitably-supportedrock-shaft having rock-arms; a valve supported between said rock-arms; avalveactuating lever; and connections between said valve-actuating leverand valve.

FRANCIS H. RICHARDS.

XVitnesses:

FRED. J. DOLE, HENRY BIssELL.

